We backpacked in, starting at Bear Valley trailhead and spending 2 nights at Wildcat Campground. What a great experience! Parking was plentiful at Bear Valley, and much of the trail was shaded. You hike on a dirt/gravel road for the first half, enter a well-maintained trail for a bit, then emerge back onto a gravel road to hike down into the campsite. The last third-ish is unshaded and was pretty warm in the late morning. The campgrounds were in great condition, with concrete picnic tables and bear boxes. The campground had a single potable water faucet, trash/recycling cans, and probably some of the cleanest pit toilets I've ever seen, well-stocked with TP! We stayed at site 007, which was a bit small for us but if you only have 1-2 tents, it's perfect. Otherwise, it was a fantastic place to stay. There were elk, foxes, and coyotes that came into the campground at night, and we also saw snakes, dolphins, and even a few whales. The beach is ~2mins down the hill, and was mostly deserted the whole time we were there. We had bonfires on the beach (get a permit!) and hiked about a mile on the sand to Alamere Falls, which was super cool. There are other day hikes out of Wildcat, but be aware that many of the smaller trails had TONS of poison oak on both sides and were pretty narrow. Also, none of the campgrounds at Wildcat have any shade, so definitely bring sunscreen!
We will definitely be coming back at some point, highly recommend if you can camp here.